1
a period of inactivity
After a long period of inactivity, the machine needed maintenance.
经过长时间的不活动，机器需要维护。
不活动；静止；懒散；消极
先理解核心含义，再看它在真实句子里的用法。
不活动；静止；懒散；消极
The state or quality of being inactive; idleness or passiveness.
After a long period of inactivity, the machine needed maintenance.
经过长时间的不活动，机器需要维护。
不活动；懒散；被动。
The quality of being inactive; idleness; passiveness.
Prolonged inactivity can lead to muscle weakness and joint stiffness.
长时间不活动会导致肌肉无力和关节僵硬。
The factory was closed due to prolonged inactivity in the market.
由于市场长期不活跃，这家工厂关闭了。
The security system activates after a period of inactivity.
安全系统在一段时间不活动后启动。
After a long period of inactivity, the machine needed maintenance.
经过长时间的不活动，机器需要维护。
The account was closed due to inactivity.
由于不活跃，账户被关闭。
Prolonged inactivity can lead to muscle weakness.
长时间的不活动会导致肌肉无力。
Not this
The market experienced an inactivity last month.
Use this
The market experienced inactivity last month.
inactivity 是不可数名词，不能加不定冠词 'an'。应直接使用 inactivity 表示抽象概念。
Not this
She is in inactivity state after surgery.
Use this
She is in an inactive state after surgery.
inactivity 是名词，不能用作定语修饰名词。应使用形容词 inactive 来修饰 state。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
缺乏身体活动；久坐不动
Physical inactivity is a major risk factor for heart disease.
缺乏身体活动是心脏病的一个主要风险因素。
一段不活动的时间；静止期
After a long period of inactivity, the account was closed.
经过长时间的不活动后，该账户被关闭。
被迫停止活动；被迫闲下来
His injury led to forced inactivity for several months.
他的伤病导致他被迫停止活动数月。
长期不活动；长期静止
Prolonged inactivity can weaken your muscles.
长期不活动会使肌肉变弱。
经济不活跃；非经济活动
The report examined the causes of economic inactivity among young people.
该报告调查了年轻人经济不活跃的原因。
Use inactivity naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记：in（不）+ activity（活动）→ 不活动。想象手机没电，屏幕静止，人懒散不动。
语域：neutral 常见场景：health and exercise、general description inactivity 是中性词，常用来描述不活动或静止的状态，多见于健康、运动或日常说明中；正式书面语中也比较常见。口语里有时更直接说 not active 或 doing nothing。
以上单词都与 inactivity 押韵，末尾均为重读的 /ˈtɪvɪti/。注意不要混淆拼写相似的词，如 electricity /ɪˌlekˈtrɪsəti/ 和 publicity /pʌbˈlɪsəti/，它们的重音和元音不同，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.